Question 2: Q: How to test the quality of mobile phone battery with multimeter, and whether there is electricity? Measure the battery voltage of the mobile phone with a multimeter. Touch the positive electrode of the battery with a red contact pin of DC 0V gear, and touch the negative electrode of the battery with a black contact pin to read the battery voltage. Generally, the battery voltage of a mobile phone is 3.7V, and a good battery will be 0.3-0.5V higher when fully charged. Mobile phone batteries are generally equipped with over-current protection and under-voltage protection circuits. When the output current of the battery is greater than the rated current of the battery, the circuit will be automatically disconnected to protect the battery and prevent it from exploding due to short circuit. Use a multimeter to measure whether the battery protection circuit is effective. The method is to set the multimeter at DC 10A, with the red probe connected to the positive battery and the black probe connected to the negative battery. Pay attention to the reading reaction of the multimeter. It is normal to return to 0 immediately after flashing a reading.
Question 3: How does the multimeter detect whether the mobile phone battery is charged? First of all, you need to know that the volt number is V, so choose 20V.
The negative pole of the multimeter is connected to the positive and negative poles of the battery.
The number displayed is the voltage of your mobile phone battery! !
Hope to adopt
Question 4: How to check the battery status of the mobile phone? Samsung Galaxy S III inputs * # * # 4636 # * * on the dial, and selects battery information to view battery status, power, temperature, voltage and other information.
Please accept it, thank you!
Question 5: How to check the quality of mobile phone battery? The freezing time is too long. If you want to test the cell phone battery, you need special equipment. When you buy a battery in Hony Battery Store in China, you will see that technicians have tested the battery. Go to customer service. If it really doesn't work, change the battery. I also use a smart phone, and the original power is not enough. So I equipped a special battery for the domestic Hongyichuan "Hong Haier" smartphone, which can replace the original power supply and the standby time can be extended to two or three days.
Question 6: How to check the quality of mobile phone battery 1? Compare battery capacity. The average nickel-cadmium battery is 500mAh or 600mAh.
Nickel-hydrogen battery only has 800-900 mAh；; The capacity of lithium-ion mobile phone batteries is generally between 1300- 1400mAh, so the service life of lithium-ion batteries is about 1.5 times that of nickel-hydrogen batteries and about 3.0 times that of nickel-cadmium batteries. If it is found that the working time of the lithium-ion mobile phone battery block you bought is not as long as that stipulated in the advertisement or manual, it may be counterfeit.
2. Look at the plastic surface and plastic material. The wear-resistant surface of genuine battery is uniform, made of PC material, and there is no brittle crack phenomenon; Counterfeit batteries have no wear-resistant surface or are too rough, and are made of recycled materials, which are easy to crack.
3. The appearance of all genuine mobile phone batteries should be neat, without unnecessary burrs, and the outer surface has a certain roughness and feels comfortable; The inner surface feels smooth, and tiny longitudinal scratches can be seen under the light. The battery electrode is the same as the battery width of the mobile phone, and the corresponding positions below the battery electrode are marked with [+] and [-]. The isolation material of the battery charging electrode is the same as the shell, but it is not integrated.
4. For the original battery, the battery surface color and texture are clear, uniform and clean, without obvious scratches and damage; The battery identification shall be printed with the model, type, rated capacity, standard voltage, sign and manufacturer's name of the battery. When using the mobile phone, the hand feel should be smooth and smooth, the tightness should be appropriate, the hands should be well matched and the lock should be reliable; Metal parts have no obvious scratches, blackening and turning green. If the mobile phone battery we bought does not conform to the above phenomenon, we can preliminarily conclude that it is a fake.
At present, many mobile phone manufacturers also try their best to improve their technical level from their own point of view, so as to improve the counterfeiting difficulty of mobile phones and their accessories, thus further curbing the phenomenon of counterfeit parallel imports. Generally, regular mobile phone products and their accessories require the same appearance. Therefore, if we install the bought mobile phone battery, we should carefully compare the colors of the fuselage and the bottom case of the battery. If the color is the same, it is the original battery. Otherwise, the battery itself is dim and may be a fake battery.
6. Observe the abnormal situation of charging. Generally, there should be an over-current protector inside the genuine mobile phone battery, which will automatically cut off the circuit in case of excessive current caused by external short circuit to avoid burning or damaging the mobile phone; Lithium-ion batteries also have overcurrent protection circuits. When using non-standard electrical appliances, the power supply will be automatically cut off if the alternating current is too large, resulting in charging failure. Under normal circumstances, the battery can automatically return to the on state. If, in the process of charging, we find that the battery is seriously hot, smoking or even exploding, it means that the battery must be fake.
7. Look at the anti-counterfeiting logo carefully. For example, the word NOKIA hidden under the sticker is the trick. Clear and flawless is the original product; Pale is a fake product. If you look carefully, you may find the name of the manufacturer. For example, Motorola battery, its anti-counterfeiting trademark is diamond, which can flash a three-dimensional effect from any angle, while Motorola, original and clearly printed, is genuine. On the contrary, once the color is dim, the three-dimensional sense is insufficient, and the text is blurred, it may be a fake.
8. Measure the charging voltage of the battery block. If a nickel-cadmium or nickel-hydrogen battery block is used as a counterfeit lithium-ion mobile phone battery block, it must be composed of five single batteries, and the charging voltage of each single battery generally does not exceed 1.55V, and the total voltage of the battery block does not exceed 7.75V When the total charging voltage of the battery block is lower than 8.0V, it may be a nickel-cadmium battery or a nickel-hydrogen battery.
9. Use special tools. Faced with more and more kinds of mobile phone batteries in the market, as well as more and more sophisticated counterfeiting technology, some large companies are constantly improving their anti-counterfeiting technology. For example, the new Nokia mobile phone batteries have been specially treated on the logo, which requires special prisms to identify them. Only Nokia has them. Therefore, with the improvement of anti-counterfeiting technology, it is difficult for us to identify the authenticity from the appearance.
10. Use a special detector. The quality of mobile phone batteries is difficult to distinguish between good and bad only from appearance. Therefore, a mobile phone battery detector has been introduced in the market, which can detect the capacity and quality of lithium, nickel and other batteries with voltage between 2.4V and 6.0V and capacity within 1999mAH, and has the functions of activation, charging and discharging. The whole process is controlled by the microprocessor according to the characteristics of the battery, and the digital display of the measured technical parameters such as voltage, current and capacity can be realized.
1 1. The exterior of lithium-ion mobile phone battery is generally marked with English 7.2 vlit ...>>.
Question 7: How to judge whether a mobile phone battery is a lithium battery? . Ni-MH, Ni-Cd, Li-ion and Li-polymer batteries appear in the market as lithium metal batteries, which can be detected by the following methods: 1. Self-discharge rate. Lithium ion battery 8%/ month; Lithium polymer battery 20%/ month; Ni-MH and Ni-Cd batteries 100%/ month. 2. Lithium battery has no memory effect. 3. Insert the special test card into the digital mobile phone, press "#" to enter the test state, and then press 490 "#". If the mobile phone displays "Battey Rd Fail", the battery is a fake lithium battery. 4. The English logo of lithium battery is Li, and the Ni-MH and Ni-Cd batteries are NIMH and NICD. 5. The barcode of the fake lithium battery is darkened and layered. 6. The original battery plastic film pressing mold is precise, neat in appearance, burr-free, and feels good. 7. The battery label is legible, corresponding to the battery type, and the white part of the metal label is scratched.
Question 8: How to test the battery performance of iphone? Just download a battery management software.
Question 9: How to judge whether the newly bought mobile phone battery is original? Generally speaking, the labels on batteries are printed in simplified Chinese, and many parallel batteries are sold abroad, so the labels on them are all in English. In order to confuse the eyes, some JS use fake batteries instead of real batteries, which are also printed in Chinese. However, the fake battery is very rough in workmanship, while the real battery has a neat appearance and no redundant burr. The outer surface has a certain roughness, and it feels comfortable. The inner surface feels smooth, and subtle longitudinal scratches can be seen under the light. Moreover, the handwriting of the real battery label is clear, the battery label corresponds to the battery type, the font outline of the manufacturer is clear, the brightness of the anti-counterfeiting logo is good, and the appearance is three-dimensional. Because the real battery adopts electroplating process, the sticker feels very textured. Because the bar code and serial number of many manufacturers' batteries are printed twice, the font will look obviously different from the surrounding fonts, and it will feel slightly more prominent than other parts when touched by hand. The printing of the fake battery is rough, the sticker feels smooth, and its serial number is also printed with the sticker, so the color is the same as the surrounding fonts, and it feels nothing special. The real battery is installed in the mobile phone, which should feel comfortable. The locking position of the locking part is suitable and firm, and the battery is the same color as the body. However, many fake batteries feel difficult to install, not easy to install, not closely combined with the fuselage, and many are obviously loose. The color of the battery is somewhat different from that of the fuselage, so it should be obvious if you distinguish it carefully. In addition, the white part of the label surface of the real battery is lightly scratched with a metal object, which will have traces similar to pencil strokes, while the fake battery will not have similar traces due to the label material.
In addition to looking at labels, battery contacts are also a way to distinguish. The contact of the real battery is pure copper, which will not be very bright, while the contact of the fake battery is electroplated, so it looks very bright. After rubbing for a period of time, the black iron sheet inside will be exposed. For Samsung's mobile phone users, there is another way to distinguish, that is, the real battery will emit a certain sandalwood smell, which is particularly strong when put in a sealed pocket.
In fact, it is very important to know the method of distinguishing the true and false battery, but it depends more on experience and feeling. In order to have security, it is the best policy to find some reputable businesses to buy.
Question 10: How to test the battery of iphone by yourself? Hello, you need to test the life of your iPhone. If you need to charge frequently, you can install the latest PP assistant on your computer, preferably through official website, and then open the PP assistant to connect to the iPhone, so you can see the battery of your mobile phone on my device. Refer to the figure below.